Main Page | See live article | Alphabetical index "Quoin" or "coin" refers to a slightly projecting, sometimes rough-finished masonry on the corners of buildings. Architects and builders use quoins to give the impression of strength and firmness to the outline of a building. Rough-finished or rusticated masonry is also frequently used for foundation layers of buildings to give the same impression. Quoinage can be carried out in stone on a stone building, with stone on a predominantly brick building, or by laying brick masonry to give the appearance of blocks at the corner. See Architecture. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.